Episode 5:
0:17 - 0:23 - Opening Theme tune to "HeathCliff" an animated television series about a mischievous cat always getting into trouble.

0:24 - 0:41 - Dialogue is a parody of David Bowies song "Space Oddity".

7:10 - 7:15 - Audio from the character "Inappropriate Comedy Tree" in the television series "Perfect Hair Forever" on Adult swim.

Episode 6:
7:35 - 7:55 - Theme tune to "Police Squad!" and later used again as the theme for "Naked Gun".
(There is also a reference here to some of those cheesy tv shows where they would use an awful pun right before the credits roll.)